Retrieval device

An endoscopic surgical device for retrieving severed tissue or foreign bodies from within a subject is disclosed. The device comprises a support unit and a tissue retrieving net system. The net system is carried by the support unit and may be inserted into the subject through an orifice or small incision and operated to retrieve tissue that has been severed by a conventional method. The net system comprises a net, a net actuator, a net deployment and retrieval assembly for transmitting motion between the net and its actuator. The net system further comprises at least one net connector disposed such that only one connector is within an articulation zone, defined by locations of severe bending of the device during operation.

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Description
CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. Non-Provisional patent application Ser. No. 10/965,542 entitled “Retrieval Device,” filed Oct. 14, 2004, which is a divisional of U.S. Non-Provisional patent application Ser. No. 10/146,273 filed May 15, 2002, and issued as U.S. Pat. No. 6,814,739 on Nov. 9, 2004, which claims benefit of U.S. Patent Provisional Application No. 60/292,168, entitled “Retrieval Device,” filed on May 18, 2001, the entire disclosures of which are incorporated herein by reference.

FIELD OF THE INVENTION

The present invention relates to surgical devices and more particularly to endoscopic retrieval devices constructed for retrieving relatively small pieces of sample tissue or foreign bodies from a human subject through orifices or small incisions.

BACKGROUND OF THE INVENTION

Snares, baskets, and graspers are in widespread use for severing capturing and retrieving tissue specimens and foreign bodies from within subjects. The devices are used in human and animal subjects, in laparoscopic surgeries and other procedures where access within a subject is only possible via a small opening. One exemplary use is for cutting off and retrieving intestinal polyps where a wire snare, passed through an colonoscope instrument channel, encircles and is tightened about an intestinal polyp to sever the polyp. The severed polyp is retrieved in a net inserted through the instrument channel. The net is manipulated to enclose the polyp and then withdrawn with the instrument so that the tissue architecture remains undisturbed.

In this procedure, as well as others, the net and snare must be quite compact in order to pass into the subject through the instrument channel, or other passage. Prior art proposals have employed snares supported within plastic tubes that were snaked into the subject to locate the snare where desired. The snare was then deployed from its tube, manipulated to cut off the polyp and retrieved into the tube for removal from the subject.

A net, collapsed within another tube, was introduced through the instrument channel, etc., for removing the polyp. When near a target polyp, the net was deployed, like the snare, and manipulated to net the polyp. The net was then closed sufficiently to secure the polyp and withdrawn from the subject.

U.S. Pat. No. 5,643,283 to Younker, which is incorporated herein by reference in its entirety, discloses a device for retrieving an object from within a subject. The device comprises a shaft and a compressible pouch for receiving the object positioned adjacent a distal end of the shaft. The pouch includes a mouth which can be opened and closed. The pouch is retained, in proximity to the distal end of the shaft, on a cable loop by a slidable tether. The net is free to slide on the cable loop to form a pouch at the distal end of the shaft. The tether is fixed at a second location near the proximal end of the shaft, and in one embodiment, is tied off to a ring and secured with heat shrink tubing. When the targeted foreign object is within the pouch, a clinician disengages the ring portion of the handle to close the net around the object. The clinician then removes the device from the patient and unloads the object from the net. The clinician then places the ring on a post, in order to pack the pouch into the distal end of the shaft.

In operation of a commercial embodiment of U.S. Pat. No. 5,643,283, several problematic issues have surfaced. Clinicians have experienced difficulty in understanding the operation of the tether, in particular, the interaction of the ring and post. The ring is to be used to pull the net inside the shaft only when an object is not within the net. In preparation to capture an object, the ring should be disengaged to release the net. The net is then slid over the targeted object and the net is closed. At this point, proper operation would involve merely removing the device from the patient. However, some clinicians when operating the device try to further pull the net inside the shaft when the net is bundled up at distal end of cable loop. This will cause the net to jam, or in some cases, damages the tubing. The occasional improper operation of the device sometimes causes permanent malfunction.

The commercial embodiment discussed above also adds undesirable expense to the product. Specifically, the full length tether and heat shrink operation add material cost and labor assembly cost to the device.

The present invention provides a new and improved retrieval device that is so constructed and arranged that net movement during deployment and retrieval is not prohibitively restricted. Secure net attachment is assured and that provides for convenient net packing in the introducer passage. The device provides a convenient and economical method of sample retrieval during endoscopic procedures. The new retrieval device is easy assemble, manufactured at a reduced cost, and easier to use by the end consumer.

SUMMARY OF THE INVENTION

In one illustrated embodiment of the present invention an endoscopic surgical device for retrieving severed tissue from within a human subject is provided. The device includes a support unit and a tissue retrieving net system.

The support unit includes a body and an elongated introducer member. The body defines a first passage therethrough. The introducer has a first end section proximal and fixed with respect to the body and a second end section remote form the body. The introducer member further defines a second passage aligned with the first passage and opening at the second end section.

The tissue retrieving net system includes a net, a net deployment and retrieval assembly and a net actuator system.

The net includes a wire-like resilient loop and a net element having a mouth section slidably disposed on the loop and a tissue receiving pouch section. The loop terminates with two relatively parallel loop cables. The net is disposed adjacent the second end for deployment and retraction through the second passage opening.

The net deployment and retrieval assembly extends substantially through the first and second passages and connects to the net. The assembly further includes a motion transmitting member extending in the second passage to the loop.

The net actuator unit includes a first handle fixed with respect to the body and a second handle fixed with respect to the motion transmitting member and movable relative to the first handle. The act of shifting the second handle relative to the first handle shifts the net into and out of the second passage opening.

The introducer member second passage has a diameter substantially smaller than the width of the loop as deployed. The member engages the loop at the second end section opening and resiliently collapses and elongates the loop as the net is retracted and moves into the introducer member passage. The loop resiliently returns to its uncollapsed configuration as it is deployed.

In one embodiment, the net system includes at least one connector adapted to fasten each loop cable. The ends of the net element are secured to the motion transmitting member on the proximal side of the at least one connector with respect to the support unit.

In a second embodiment, the net system further includes a first connector, a second net connector proximal to the second passage opening, and an intermediate portion defined by an axial space on the loop cables between the first connector and the second connector. The first connector and the second connector are adapted to fasten each loop cable. Ends of the net, element are secured to the loop within the intermediate loop portion between the first connector and the second connector.

The deployment and retrieval assembly may include a thin, flexible wire-like motion transmitting member between the net actuator unit and the loop. The motion transmitting member extends within an introducer guide passage which closely surrounds the motion transmitting member and constrains the member for translational longitudinal motion within the passage.

The first connector may be disposed at least 6 inches from the second connector, such that only one connector is within an articulation zone during deployment of the net element.

The ends of the net element may be secured to the motion transmitting member adjacent a proximal shoulder of the connector with respect to the support unit.

The present invention offers advantages over devices available in the prior art. In a second embodiment, the net is fixed distally and proximally by the use of a first and second connector. The connectors are sufficiently spaced apart to provide secure net attachment without the use of additional tether mechanisms. The connectors are positioned such that only one may be within an articulation zone of the endoscope at a time, permitting ease of net deployment in a variety of geometric operating configurations.

In a first embodiment, only one connector is used to secure the proximal side of the net. This technique decreases the amount of cable loop length within the articulation zone. The reduction in cable loop length effectively reduces the amount of rigid material within the articulation zone of the endoscope at a time, further permitting ease of net deployment in a variety of geometric operating configurations.

The device is also easier to assemble and less expensive to manufacture than certain conventional designs.

Further features and advantages of the invention will become apparent from the following detailed description made with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an elevational view of a surgical device constructed according to one embodiment of the present invention, illustrated with the net element deployed;

FIG. 2 is a view similar to FIG. 1, illustrated with the net element retracted;

FIG. 3 is an enlarged fragmentary view of a part of the device illustrated in FIG. 1, showing detail of the introducer member;

FIG. 4 is a enlarged fragmentary view of part of the device illustrated in FIG. 1, with the device show as positioned in a sample configuration within a subject;

and

 BEST MODE CONTEMPLATED FOR CARRYING OUT THE INVENTION

An endoscopic surgical device 10 for retrieving severed tissue and or foreign bodies from within a subject is illustrated by the drawings. Referring to FIGS. 1 and 2, in one embodiment, the device 10 comprises a support u nit 12 and a tissue retrieving net system 16. The net system is carried by the unit 12 and is so constructed and arranged that it may be inserted into the subject through an orifice or small incision and operated to retrieve a tissue sample previously detached from the subject by a conventional method, e.g., a snare/cautery system. Accordingly, the net system 16 comprises a net 20, a net actuator 24, and a net deployment and retrieval assembly 28 for transmitting motion between the net and its actuator 24. The net 20 comprises a net element 21 and a net loop 22 and a distal 25 and proximal 26 tie off suture that secures the net.

The device 10 can be used with any suitable or conventional endoscopic or laparascopic surgical equipment. For purposes oft his disclosure the device 10 is described in the context of use with an endoscope/colonoscope/sigmoidoscope type apparatus (not illustrated), of conventional or suitable construction. The scope is provided with an elongated body having a controllably flexible projecting end region. Surgical instruments, such as the device 10, may be introduced through an instrument channel, which extends through the scope body, for retrieving tissue targeted by the surgeon manipulating the scope.

The support unit 12 supports the net system 16 so that the net 20 can be inserted through the scope instrument channel by a surgeon. The support unit 12 comprises a body 30 defining a passage and an elongated introducer 40 having a first end section 42 proximal and fixed with respect to the body 20 and a second end section 44 remote from the body. The introducer 40 is tubular and aligned with the body passage for receiving the net system.

The illustrated introducer 40 is a smooth, supple member capable of being snaked through the scope instrument channel into the subject and readily flexed into any shape required as the scope body is flexed by the surgeon. In the illustrated embodiment, the introducer 40 is a generally cylindrical, small diameter tube formed of non-reactive low friction plastic material, such as polytetrafluouroethylene. The first end section 42 is fixed to the body 30 while the second end section 44 houses the net for individual deployment and retrieval.

The net actuator 24 is adapted for reciprocating the deployment and retrieval assembly in the body and introducer to operate the net 20. The actuator 24 comprises a first handle 50 fixed with respect to the body 30 and a second handle 52 attached to the deployment and retrieval assembly 28 and movable with respect to the handle 50.

The second handle 52 is fixed to the assembly 28 and mounted on the handle 50 between its ends for longitudinal sliding movement. The second handle comprises a dual finger ring member 80 slidable on the handle 50. The handles 50, 52 as illustrated are formed from molded plastic materials.

The deployment and retrieval assembly 28 is constructed and arranged to transmit considerable deployment and retractive forces to the net while enabling the scope body to be freely manipulated and flexed to position the net where desired. The assembly 28 comprises a link comprises a first link section 70 and a second link section 71 connected to the actuator 24 for transmitting compressive and tensile forces between the handle 52 and a bore 58. The bore 58 is disposed within the center of the body 30. The link 70 transmits relatively substantial compressive forces without bending or breaking. The illustrated first link section 70 is formed from hypodermic needle stock, i.e., it is a cylindrical stainless steel tube. The second link section 71 as illustrated is a multi-strand cable. The first link section 70 joins the second link section 71 as the link exits the body 30.

The link 71 extends from the body 30 and within the introducer 40 so that it must flex with the introducer yet transmit compressive and tensile forces. The illustrated link 71 is closely surrounded by the body passage of the introducer passage 40. The link 71 is resiliently stiff compared to the supple introducer. When transmitting compressive forces, the link 71 is resiliently deformed to bow against the introducer wall. The link 71 has good compressive and tensile strength and is somewhat resiliently bendable. The link 71 will bend appreciably without yielding and kinking

A first connector 80 and a second connector 82 fix the loop 22 in two locations with respect to the net 20. The proximal side of the net is tied off at a location 85 between the loop cables. As illustrated in FIG. 3, a tether 27 is used to tie off the proximal side of the net. This tether is shorter than conventional tethers that travel the full length of the introducer. No further tethering system is required, although additional net mounting techniques may be employed in the practice of the invention

Referring now to FIG. 3, the first connector 80 joins the link 71 and the loop 22 together structurally. The illustrated connector 80 is a short tube crimped to both ends of the loop 22 and to the second link section 71. The illustrated connector tube is crimped about the loop and link to form a cross sectional shape, which is capable of rotating within the Introducer 40. The illustrated connector 80 is formed from hypodermic needle stock, like the first link section 70. The second connector 82 further joins opposing portions on the net loop 22 at a location proximal to the net 20 with respect to the first connector 80.

In the illustrated embodiment, the space between the two loop cables is utilized to fix the net element 21 with respect to the link 71. An intermediate region R, shown in FIG. 3, axially between the first connector 80 and the second connector 82 within the introducer 40 may be used. In an exemplary embodiment, the proximal side of the net element 21 with respect to the support system 12 is fixed to the net loops 22 at a convenient location 85. Suture material, or another known suitable method, may be used to tie the net to the loop.

The net 20 is deployed from the introducer second end 44 and manipulated by the surgeon to net severed tissue and secure the tissue for retrieval from the subject. The net 20 may be deployed after a snare or similar technique has severed the target tissue. The net 20 comprises a pouch-like net element 21 slidably supported on the loop 22.

The illustrated net loop 22 is formed from a loop of fine wire constructed and arranged to cooperate with the introducer to deploy and retract the net 20 The illustrated loop 22 is a stiff, resilient flexible wire having its respective ends crimped in place in two locations by the first and second connector 80, 82. When the net is deployed from the end of the introducer, the loop resiliently expands to a relaxed condition where the loop width is substantially greater than the introducer diameter. The deployed snare is guided to a position where it receives a target polyp or other tissue. The net is retracted by the surgeon. As the net is retracted into the introducer second end 44 the loop resiliently bears against the introducer wall so the loop resiliently collapses, narrowing the loop portion projecting from the introducer. Tissue or another object captured within the net element 21 is progressively constricted by the elastic nature of the net, allowing for a wide range of sized objects to fit inside the net without compromising the architecture preservation or the security of the object, as the net is being drawn toward the distal end of the introducer.

The net element 21 is an extremely light pouch-like structure having the net loop wire extending through the mesh about its periphery to form a net mouth slidably supported on the loop and a depending pouch. The net fibers are quite fine, yet sufficiently strong that the net element may slide along the loop wire in the direction away from the connectors 80, 82 to enclose tissue within the pouch as the net is retrieved and/or to gather the entire net at the distal net loop end when the net loop has been retrieved. The net has mini mal bulk so that when an empty net is retrieved, it easily moves completely into the introducer passage.

The illustrated net is formed from 100% nylon fibers having strand diameters of from about 0.0125 mm-0.04 mm. The fibers are woven in a diamond mesh pattern with the mesh strands spaced from 1 mm-3 mm and their intersections fixedly secured together. The illustrated netting material is substantially like that of a fine mesh hair net. The net is formed by cutting about a square, circular or elliptical section of the net, trimming or otherwise finishing the edges and threading the loop wire through the peripheral mesh elements. The cut net section size is selected sufficiently larger than the net loop area to assure that a pouch-like, tissue receiving portion suspends from the net mouth, but not too large to create undesirable bulk and difficulty packing the net when pulling it inside the shaft.

Attempting to fully retrieve a tissue containing net into the introducer 40 can result in tissue loss by forcing the tissue through the net. The net fibers are fine and strong so they may cut the tissue or they may be broken, either of which alternative is undesirable. A net actuator thumb ring may be provided with a tag (not illustrated) warning the surgeon not to continue retrieving the net against unusual resistance.

The present invention resolves problems faced by surgeons and nurses working with some prior art designs. Nurses and doctors have experienced difficulty in understanding the operation of the tether, specifically the interaction of the ring and post. Therefore, occasionally the device is operated incorrectly causing malfunction. The present design allows a nurse to pull back on the handle to conveniently pack the net inside the introducer passage.

Further, often a surgeon is required to manipulate the endoscope into difficult to access internal areas. Certain procedures require bending or twisting the endoscope. The area of the endoscope that is twisted or bent is called the articulation zone.

Some net devices have featured multiple connector designs in which the connectors are spaced somewhat adjacently with the second end section 44. In these designs, the multiple connectors on the net devices have resisted bending of the scope. Moreover, the friction created has made deployment of the net difficult once the scope has been desirably positioned by the surgeon. One advantage of the present invention is increased freedom of movement, and ease of net deployment, within the articulation zone.

During operation of the system 10, the surgeon experiences an increased ease of use over prior art designs. In the illustrated embodiment, the first connector 80 is axially disposed a distance from the second connector 82, such that only one connector is within the articulation zone (bounded by A1,A2), defined along the introducer 40 longitudinal axis, during deployment of the net element. In the illustrated system, the first connector 80 is disposed at least six inches from the second connector 82.

The articulation zone defines the axial portion of the introducer 40 within a substantially non-linear position. The articulation zone typically includes bends of greater than 30° and can exceed 200° at a radius of 0.75 inches or less.

Referring to FIG. 4, a portion of the system 10 is illustrated as positioned in a probable configuration within a subject. During operation of the scope, a surgeon may manipulate the second end section 44 of the introducer into a severe articulated position. At times, the second end section may be bent up to 180°, as illustrated in FIG. 4. Deployment of the net 20 in this and similar positions is difficult when the connectors 80, 82 are both within the articulation zone. The combined kinetic frictional force of each connector against the inside of the introducer passage would otherwise make deployment of the net difficult. As illustrated in FIG. 4, the surgeon more easily deploys the net in a variety of positions.

While two embodiments of the invention has been illustrated and described in considerable detail, the present invention is not to be considered limited to the precise constructions disclosed. Various adaptations, modifications and uses of the invention may occur to those skilled in the arts to which the invention relates. It is the intention to cover all such adaptations, modifications and uses falling within the scope or spirit of the annexed claims.

Claims

1. An endoscopic surgical device for retrieving severed tissue or foreign bodies from within a human body, the device comprising:

a. a support unit comprising: i. a body having a first passage therethrough, and ii. an elongated introducer member having a first end section proximal and fixed with respect to said body and a second end section remote from the body, the introducer member having a second passage aligned with the first passage and opening at said second end section; and
b. a tissue retrieving net system comprising: i. a net comprising a wire-like resilient loop and a net element having a mouth section slidably disposed on the loop and a tissue receiving pouch section, said loop terminating with two relatively parallel loop cables, said net disposed adjacent said second end section for deployment and retraction through said opening; ii. a net deployment and retrieval assembly extending substantially through said first and second passages and connected to the net, said assembly comprising a motion transmitting member extending in said second passage to said loop; and iii. a net actuator unit comprising a first handle fixed with respect to said body and a second handle fixed with respect to said motion transmitting member and movable relative to said first handle so that shifting the second handle relative to said first handle shifts said net into and out of said opening;
c. said second passage having a diametrical extent substantially smaller than the width of said loop as deployed, said introducer member engaging said loop at said opening and resiliently collapsing and elongating said loop as said net is retracted and moves into said second passage, said loop resiliently returning to its uncollapsed configuration as it is deployed;
d. said net system further comprising a connector, wherein the connector secures each loop cable;
e. wherein with respect to said support unit, a proximal portion of said net element directly contacts and is secured to the two relatively parallel loop cables.

2. The endoscopic surgical device of claim 1, wherein with respect to said support unit, the proximal portion of said net element is secured to the two relatively parallel loop cables at a location adjacent a shoulder of the connector.

3. The endoscopic surgical device of claim 2, wherein with respect to said support unit, the proximal portion of said net element is secured to the two relatively parallel loop cables at a location adjacent a proximal shoulder of the connector.

4. The endoscopic surgical device of claim 1, wherein the connector holds the two relatively parallel loop cables together.

5. An endoscopic surgical device for retrieving severed tissue or foreign bodies from within a human body, the device comprising:

a. a support unit comprising: i. a body having a first passage therethrough, and ii. an elongated introducer member having a first end section proximal and fixed with respect to said body and a second end section remote from the body, the introducer member having a second passage aligned with the first passage and opening at said second end section; and
b. a tissue retrieving net system comprising: i. a net comprising a wire-like resilient loop and a net element having a mouth section slidably disposed on the loop and a tissue receiving pouch section, said loop terminating with two relatively parallel loop cables, said net disposed adjacent said second end section for deployment and retraction through said opening; ii. a net deployment and retrieval assembly extending substantially through said first and second passages and connected to the net, said assembly comprising a motion transmitting member extending in said second passage to said loop; and iii. a net actuator unit comprising a first handle fixed with respect to said body and a second handle fixed with respect to said motion transmitting member and movable relative to said first handle so that shifting the second handle relative to said first handle shifts said net into and out of said opening;
c. said second passage having a diametrical extent substantially smaller than the width of said loop as deployed, said introducer member engaging said loop at said opening and resiliently collapsing and elongating said loop as said net is retracted and moves into said second passage, said loop resiliently returning to its uncollapsed configuration as it is deployed;
d. said net system further comprising a first connector and a second connector, wherein with respect to said support unit, proximal ends of the two relatively parallel loop cables are secured to a distal end of the motion transmitting member by the first connector, distal ends of the two relatively parallel loop cables are secured to each other by the second connector;
e. wherein with respect to said support unit, a proximal portion of said net element directly contacts and is secured to the two relatively parallel loop cables.

6. The endoscopic surgical device of claim 5, wherein with respect to said support unit, the proximal portion of said net element is secured to the two relatively parallel loop cables at a location adjacent a shoulder of the second connector.

7. The endoscopic surgical device of claim 6, wherein with respect to said support unit, the proximal portion of said net element is secured to the two relatively parallel loop cables at a location adjacent a proximal shoulder of the second connector.

8. The endoscopic surgical device of claim 5, wherein the second connector holds the two relatively parallel loop cables together.

Referenced Cited
U.S. Patent Documents
460940 October 1891 Baughli
2197921 April 1940 Brown
2626447 January 1953 Hunt
3805791 April 1974 Seuberth et al.
4083706 April 11, 1978 Wiley
4146019 March 27, 1979 Bass et al.
4200104 April 29, 1980 Harris
4202338 May 13, 1980 Bitrolf
4256113 March 17, 1981 Chamness
4311143 January 19, 1982 Komiya
4493320 January 15, 1985 Treat
4905691 March 6, 1990 Rydell
4966589 October 30, 1990 Kaufman
5009642 April 23, 1991 Sahi
5057114 October 15, 1991 Wittich et al.
5059199 October 22, 1991 Okada et al.
5078716 January 7, 1992 Doll
5084054 January 28, 1992 Bencini et al.
5098441 March 24, 1992 Wechler
5123906 June 23, 1992 Kelman
5147371 September 15, 1992 Washington
5156590 October 20, 1992 Vilmar
5171233 December 15, 1992 Amplatz et al.
5190542 March 2, 1993 Nakao
5192280 March 9, 1993 Parins
5192286 March 9, 1993 Phan et al.
5201740 April 13, 1993 Nakao et al.
5207686 May 4, 1993 Dolgin
5279548 January 18, 1994 Essig et al.
5336227 August 9, 1994 Nakao et al.
5354303 October 11, 1994 Spaeth et al.
5373854 December 20, 1994 Kolozsi
5374273 December 20, 1994 Nakao et al.
5376094 December 27, 1994 Kline
5417697 May 23, 1995 Wilk et al.
5423830 June 13, 1995 Schneebaum et al.
5441503 August 15, 1995 Considine et al.
5449372 September 12, 1995 Schmaitz et al.
5480404 January 2, 1996 Kammerer et al.
5496330 March 5, 1996 Bates et al.
5501692 March 26, 1996 Riza
5536248 July 16, 1996 Weaver et al.
5542948 August 6, 1996 Weaver et al.
5599299 February 4, 1997 Weaver et al.
5599300 February 4, 1997 Weaver et al.
5643283 July 1, 1997 Younker
5666970 September 16, 1997 Smith
5741271 April 21, 1998 Nakao et al.
5759187 June 2, 1998 Nakao
5779686 July 14, 1998 Sato et al.
5782840 July 21, 1998 Nakao et al.
5785689 July 28, 1998 de Toledo
5788681 August 4, 1998 Weaver et al.
5810776 September 22, 1998 Bacich et al.
5843028 December 1, 1998 Weaver et al.
5843051 December 1, 1998 Adams et al.
5846248 December 8, 1998 Chu et al.
5860987 January 19, 1999 Ratcliff et al.
5906594 May 25, 1999 Scarfone et al.
5906621 May 25, 1999 Secrest
5961526 October 5, 1999 Chu et al.
5964740 October 12, 1999 Ouchi et al.
5971994 October 26, 1999 Fritzsch
5971995 October 26, 1999 Rousseau
5976073 November 2, 1999 Ouchi
5989264 November 23, 1999 Wright
5997547 December 7, 1999 Nakao et al.
6007546 December 28, 1999 Snow et al.
6010512 January 4, 2000 Chu et al.
6015391 January 18, 2000 Rishton et al.
6015415 January 18, 2000 Avellanet
6050995 April 18, 2000 Durgin
6068603 May 30, 2000 Suzuki
6093195 July 25, 2000 Ouchi
6123665 September 26, 2000 Kawano
6142956 November 7, 2000 Kortenbach et al.
6171315 January 9, 2001 Chu et al.
6174291 January 16, 2001 McMahon et al.
6183482 February 6, 2001 Bates et al.
6190353 February 20, 2001 Makower et al.
6193672 February 27, 2001 Clement
6210416 April 3, 2001 Chu et al.
6224611 May 1, 2001 Ouchi
6235026 May 22, 2001 Smith
6245078 June 12, 2001 Ouchi
6264664 July 24, 2001 Avellanet
6299612 October 9, 2001 Ouchi
6315782 November 13, 2001 Chu et al.
6319260 November 20, 2001 Yamamoto
6352503 March 5, 2002 Matsui et al.
6375661 April 23, 2002 Chu et al.
6383194 May 7, 2002 Pothula
6383198 May 7, 2002 Hamilton
6407333 June 18, 2002 Schroen
6409733 June 25, 2002 Conlon et al.
6440138 August 27, 2002 Reiley et al.
6458074 October 1, 2002 Matsui et al.
6500182 December 31, 2002 Foster
6527753 March 4, 2003 Sekine et al.
6527781 March 4, 2003 Bates et al.
6602262 August 5, 2003 Griego et al.
6616654 September 9, 2003 Mclennauer
6616659 September 9, 2003 de la Torre et al.
6669716 December 30, 2003 Gilson et al.
6730097 May 4, 2004 Dennis
6743228 June 1, 2004 Lee et al.
6770066 August 3, 2004 Weaver et al.
6773432 August 10, 2004 Clayman et al.
6814739 November 9, 2004 Secrest
6827710 December 7, 2004 Mooney et al.
6945956 September 20, 2005 Waldhauser et al.
7001354 February 21, 2006 Suzuki et al.
7037291 May 2, 2006 Lee et al.
7037307 May 2, 2006 Dennis
7041116 May 9, 2006 Goto et al.
7044947 May 16, 2006 de la Torre et al.
7104990 September 12, 2006 Jenkins et al.
7122003 October 17, 2006 Nakao
7147635 December 12, 2006 Ciarrocca
7270663 September 18, 2007 Nakao
7387632 June 17, 2008 Ouchi
7547310 June 16, 2009 Whitfield
7575585 August 18, 2009 Goto et al.
7632294 December 15, 2009 Milbodker et al.
7691110 April 6, 2010 Secrest et al.
7704249 April 27, 2010 Woloszko et al.
7758591 July 20, 2010 Griego et al.
7785250 August 31, 2010 Nakao
7951073 May 31, 2011 Freed
7972265 July 5, 2011 Chin et al.
8016838 September 13, 2011 Kaye
8057484 November 15, 2011 Secrest
8066689 November 29, 2011 Mitelberg et al.
8070756 December 6, 2011 Secrest
8075572 December 13, 2011 Stefanchik et al.
8100905 January 24, 2012 Weitzner
8114099 February 14, 2012 Shipp
8128592 March 6, 2012 Mitelberg et al.
8167893 May 1, 2012 Motosugi
8187266 May 29, 2012 Dickens et al.
8216272 July 10, 2012 Shipp
8241210 August 14, 2012 Lunsford et al.
8267933 September 18, 2012 Hamou
8282658 October 9, 2012 Knapp et al.
8298243 October 30, 2012 Carlton et al.
8317771 November 27, 2012 Mitelberg et al.
8328803 December 11, 2012 Regadas
8343168 January 1, 2013 Kaye et al.
8357148 January 22, 2013 Boulais et al.
8366612 February 5, 2013 Rosenthal
8372066 February 12, 2013 Manwaring et al.
8388630 March 5, 2013 Teague et al.
8591521 November 26, 2013 Cherry et al.
9486188 November 8, 2016 Secrest
20020049423 April 25, 2002 Howell et al.
20020091394 July 11, 2002 Reynolds et al.
20020151889 October 17, 2002 Swanson et al.
20030004538 January 2, 2003 Secrest et al.
20030139750 July 24, 2003 Shinozuka et al.
20030195470 October 16, 2003 Ponzi
20030195492 October 16, 2003 Gobron et al.
20030216753 November 20, 2003 Nishtala et al.
20030236519 December 25, 2003 Kear
20040059352 March 25, 2004 Burbank et al.
20040158127 August 12, 2004 Okada
20050043743 February 24, 2005 Dennis
20050085808 April 21, 2005 Nakao
20050107668 May 19, 2005 Smith
20050267489 December 1, 2005 Secrest et al.
20050267490 December 1, 2005 Secrest et al.
20060009759 January 12, 2006 Christian et al.
20060058776 March 16, 2006 Bilsbury
20060229640 October 12, 2006 Whitfield
20060235433 October 19, 2006 Secrest
20060264977 November 23, 2006 Dana et al.
20070016225 January 18, 2007 Nakao
20070250070 October 25, 2007 Nobis et al.
20070288035 December 13, 2007 Okada
20080045945 February 21, 2008 Hamou
20080183184 July 31, 2008 Kaye et al.
20080306336 December 11, 2008 Kaye et al.
20090043317 February 12, 2009 Cavanaugh et al.
20090112244 April 30, 2009 Freudenthal
20100268206 October 21, 2010 Manwaring et al.
20100268216 October 21, 2010 Manwaring
20110106077 May 5, 2011 Yanuma et al.
20110106107 May 5, 2011 Binmoeller et al.
20120004666 January 5, 2012 Cowley et al.
20120046667 February 23, 2012 Cherry
20120172662 July 5, 2012 Kappel et al.
20120172864 July 5, 2012 Farin et al.
20120184957 July 19, 2012 Saleh
20120283723 November 8, 2012 Jenkins et al.
20130018384 January 17, 2013 Kappel et al.
20130018385 January 17, 2013 Keene et al.
Foreign Patent Documents
19938902 April 2000 DE
0446020 September 1991 EP
463363 January 1992 EP
758551 February 1997 EP
1180349 February 2002 EP
1870015 December 2007 EP
3-54652 May 1991 JP
5-091686 April 1993 JP
3250621 August 1993 JP
H06154161 June 1994 JP
H07101802 April 1995 JP
10-071166 March 1998 JP
10-174688 June 1998 JP
11-047154 February 1999 JP
11-226024 August 1999 JP
11309150 November 1999 JP
2000-175930 June 2000 JP
2000-210295 August 2000 JP
2000-316868 November 2000 JP
2000-342600 December 2000 JP
2003-052707 February 2003 JP
2003-511140 March 2003 JP
2004-532683 October 2004 JP
2007-534451 November 2007 JP
93/15671 August 1993 WO
99/42041 August 1999 WO
99/51159 October 1999 WO
02/094082 November 2002 WO
03/105674 December 2003 WO
2005/115116 December 2005 WO
2005/115120 December 2005 WO
2006112231 October 2006 WO
2007000452 January 2007 WO
2008/094931 August 2008 WO
2008/154406 December 2008 WO
Other references
  • Office Action from European Application No. 0279222.6 dated Sep. 23, 2010.
  • Response from European Application No. 02729222.6 dated Jan. 28, 2011.
  • Office Action from European Application No. 02729222.6 dated Sep. 7, 2011.
  • Response from European Application No. 02729222.6 dated Jan. 10, 2012.
  • Search Report from European Application No. 05757183.8 dated Oct. 4, 2012.
  • Office Action from European Application No. 05757183.8 dated Feb. 11, 2013.
  • Response from European Application No. 05757183.8 dated Aug. 19, 2013.
  • Search Report from European Application No. 05755966.8 dated Jun. 5, 2012.
  • Office Action from European Application No. 05755966.8 dated Sep. 27, 2012.
  • Response from European Application No. 05755966.8 dated Apr. 5, 2013.
  • Search Report from European Application No. 06112733.8 dated Jan. 12, 2007.
  • Response from European Application No. 05112733.8 dated Jan. 7, 2009.
  • Office Action from European Application No. 06112733.8 dated Feb. 19, 2009.
  • Search Report from European Application No. 12162767.3 dated Dec. 23, 2015.
  • Office Action from Japanese Application No. 2007-511105 dated Sep. 3, 2009.
  • Response from Japanese Application No. 2007-511105 dated Mar. 5, 2010 along with English translation of claims and relevant portion of remarks made in Amendment.
  • Office Action from Japanese Application No. 2007-515282 dated Jan. 7, 2011.
  • Response from Japanese Application No. 2007-515282 dated Apr. 7, 2011 along with English translation of claims and relevant portion of remarks made in Amendment.
  • Office Action from Japanese Application No. 2007-515282 dated Jul. 27, 2011.
  • Response from Japanese Application No. 2007-515282 dated Mar. 5, 2012 along with relevant portion of remarks made in Amendment.
  • Office Action from Japanese Application No. 2009-548397 dated Sep. 28, 2012.
  • Response from Japanese Application No. 2009-548397 dated Mar. 28, 2013 along with English translation of claims and relevant portion of remarks made in Amendment.
  • Office Action from Japanese Application No. 2010-511374 dated Dec. 28, 2012.
  • Response from Japanese Application No. 2010-511374 dated Jul. 5, 2013 along with English translation of claims and relevant portion of remarks made in Amendment.
  • Advanced Lin Retrieval Devices Brochure, issued by US Endoscopy 760204, Rev. A, dated at least as early as the filing date of the subject application.
  • Cook Medical brochure pages, Esophageal/Gastric Colonic: Snares, 3 pgs., date is at least as early as Jul. 1, 2013.
  • Juan-Marie et al. Double-Lumen Snare Injector: Introducing the Double-Lumen Concept in Ancillary Pollypectomy Equipment, Gastrointestinal Endoscopy, vol. 57, No. 5, 2003.
  • MTW Endoskopie, brochure, one page, date is at least as early as Jul. 1, 2013.
  • Olympus, EndoTherapy, Polypectomy, brochure, 3 pgs., date is at least as early as Jul. 1, 2013.
  • English translation of Office Action in Japanese Application No. 2014-004359 dated Jan. 20, 2015.
  • Extended European Search Report in European Application No. 08756773.1 dated Feb. 23, 2015.
  • Office Action from U.S. Appl. No. 14/565,024 dated Dec. 9, 2015.
  • Office Action from European Application No. 05757183.8 dated Nov. 16, 2015.
  • Response to Office Action from European Application No. 05757183.8 dated Mar. 17, 2016.
  • Extended European Search Report in European Application No. 08714094.3 dated Jan. 27, 2016.
  • International Search Report and Written Opinion from PCT/US02/15465 dated Aug. 26, 2013.
  • International Preliminary Examination Report from PCT/US02/15465 dated Nov. 12, 2003.
  • International Search Report from PCT/US05/18294 dated May 25, 2005, 10 pgs.
  • International Search Report and Written Opinion from PCT/US05/18497 dated May 8, 2008.
  • International Search Report and Written Opinion from PCT/US08/52342 dated Jul. 30, 2008.
  • International Search Report and Written Opinion from PCT/US08/066161 dated Sep. 22, 2008.
  • International Search Report and Written Opinion from PCT/US2014/053828 dated Dec. 30, 2014.
  • International Preliminary Report on Patentability from PCT/US2014/053828 dated Mar. 8, 2016.
  • Office Action from U.S. Appl. No. 10/146,273 dated Oct. 22, 2003.
  • Response from U.S. Appl. No. 10/146,273 dated Jan. 16, 2004.
  • Office Action from U.S. Appl. No. 10/146,273 dated Apr. 14, 2004.
  • Response from U.S. Appl. No. 10/146,273 dated May 26, 2004.
  • Notice of Allowance from U.S. Appl. No. 10/146,273 dated Jul. 12, 2004.
  • Office Action from U.S. Appl. No. 10/965,542 dated Jun. 25, 2008.
  • Interview Summary from U.S. Appl. No. 10/965,542 dated Oct. 14, 2008.
  • Response from U.S. Appl. No. 10/965,542 dated Oct. 27, 2008.
  • Office Action from U.S. Appl. No. 10/965,542 dated Feb. 4, 2009.
  • Response from U.S. Appl. No. 10/965,542 dated Aug. 4, 2009.
  • Office Action from U.S. Appl. No. 10/965,542 dated Oct. 14, 2009.
  • Response from U.S. Appl. No. 10/965,542 dated Apr. 14, 2010.
  • Office Action from U.S. Appl. No. 10/965,542 dated Jun. 30, 2010.
  • Response from U.S. Appl. No. 10/965,542 dated Dec. 29, 2010.
  • Office Action from U.S. Appl. No. 10/965,542 dated May 21, 2013.
  • Response from U.S. Appl. No. 10/965,542 dated Sep. 23, 2013.
  • Office Action from U.S. Appl. No. 10/965,542 dated Dec. 27, 2013.
  • RCE and Response to Office Action from U.S. Appl. No. 10/965,542 dated May 27, 2014.
  • Office Action from U.S. Appl. No. 10/965,542 dated Aug. 11, 2014.
  • Interview Summary from U.S. Appl. No. 10/965,542 dated Dec. 17, 2014.
  • Amendment from U.S. Appl. No. 10/965,542 dated Jan. 12, 2015.
  • Office Action from U.S. Appl. No. 10/965,542 dated Feb. 20, 2015.
  • Response to Office Action from U.S. Appl. No. 10/965,542 dated Aug. 20, 2015.
  • Office Action from U.S. Appl. No. 10/965,542 dated Sep. 18, 2015.
  • Response to Office Action from U.S. Appl. No. 10/965,542 dated Jan. 19, 2016.
  • Notice of Allowance from U.S. Appl. No. 10/965,542 dated Jul. 11, 2016.
  • Office Action from U.S. Appl. No. 11/137,763 dated Jun. 24, 2009.
  • Supplemental Office Action from U.S. Appl. No. 11/137,763 dated Sep. 9, 2009.
  • Response from U.S. Appl. No. 11/137,763 dated Mar. 3, 2010.
  • Office Action from U.S. Appl. No. 11/137,763 dated May 25, 2010.
  • Response from U.S. Appl. No. 11/137,763 dated Jul. 23, 2010.
  • Advisory Action from U.S. Appl. No. 11/137,763 dated Aug. 5, 2010.
  • Office Action from U.S. Appl. No. 11/137,763 dated Dec. 23, 2010.
  • Interview Summary from U.S. Appl. No. 11/137,763 dated May 12, 2011.
  • Response from U.S. Appl. No. 11/137,763 dated May 23, 2011.
  • Office Action from U.S. Appl. No. 11/137,763 dated Aug. 4, 2011.
  • Response from U.S. Appl. No. 11/137,763 dated Aug. 22, 2011.
  • Notice of Allowance from U.S. Appl. No. 11/137,763 dated Sep. 19, 2011.
  • Office Action from U.S. Appl. No. 11/137,814 dated May 16, 2007.
  • Response from U.S. Appl. No. 11/137,814 dated Aug. 16, 2007.
  • Office Action from U.S. Appl. No. 11/137,814 dated Dec. 7, 2007.
  • Response from U.S. Appl. No. 11/137,814 dated Apr. 7, 2008.
  • Office Action from U.S. Appl. No. 11/137,814 dated Jul. 18, 2008.
  • Response from U.S. Appl. No. 11/137,814 dated Sep. 18, 2008.
  • Interview Summary and Advisory Action from U.S. Appl. No. 11/137,814 dated Oct. 14, 2008.
  • Response from U.S. Appl. No. 11/137,814 dated Nov. 18, 2008.
  • Response from U.S. Appl. No. 11/137,814 dated Aug. 12, 2009.
  • Office Action from U.S. Appl. No. 11/137,814 dated Nov. 23, 2009.
  • Response from U.S. Appl. No. 11/137,814 dated Jan. 19, 2010.
  • Notice of Allowance from U.S. Appl. No. 11/137,814 dated Feb. 18, 2010.
  • Office Action from U.S. Appl. No. 11/404,345 dated Jun. 27, 2008.
  • Interview Summary from U.S. Appl. No. 11/404,345 dated Oct. 7, 2008.
  • Response from U.S. Appl. No. 11/404,345 dated Nov. 26, 2008.
  • Office Action from U.S. Appl. No. 11/404,345 dated Mar. 11, 2010.
  • Response from U.S. Appl. No. 11/404,345 dated May 11, 2010.
  • Advisory Action from U.S. Appl. No. 11/404,345 dated May 27, 2010.
  • Response from U.S. Appl. No. 11/404,345 dated Sep. 13, 2010.
  • Office Action from U.S. Appl. No. 11/404,345 dated Dec. 29, 2010.
  • Response from U.S. Appl. No. 11/404,345 dated May 25, 2011.
  • Notice of Allowance from U.S. Appl. No. 11/404,345 dated Aug. 19, 2011.
  • Office Action from U.S. Appl. No. 12/021,903 dated Dec. 10, 2009.
  • Response from U.S. Appl. No. 12/021,903 dated Jun. 9, 2010.
  • Office Action from U.S. Appl. No. 12/021,903 dated Aug. 5, 2010.
  • Response from U.S. Appl. No. 12/021,903 dated Oct. 7, 2010.
  • Interview Summary from U.S. Appl. No. 12/021,903 dated Oct. 5, 2010.
  • Office Action from U.S. Appl. No. 12/021,903 dated Dec. 29, 2011.
  • Interview Summary from U.S. Appl. No. 12/021,903 date Mar. 21, 2012.
  • Response from U.S. Appl. No. 12/021,903 dated May 25, 2012.
  • Notice of Allowance from U.S. Appl. No. 12/021,903 dated Aug. 9, 2012.
  • Notice of Allowance from U.S. Appl. No. 12/021,903 dated Nov. 20, 2012.
  • Office action from U.S. Appl. No. 12/135,473 dated Nov. 16, 2010.
  • Response from U.S. Appl. No. 12/135,473 dated Feb. 15, 2011.
  • Interview Summary from U.S. Appl. No. 12/135,473 dated Feb. 15, 2011.
  • Office Communication from U.S. Appl. No. 12/135,473 dated Apr. 15, 2011.
  • Notice of Allowance from U.S. Appl. No. 12/135,473 dated Jun. 27, 2011.
  • Office Action from U.S. Appl. No. 13/213,689 dated Dec. 20, 2012.
  • Response from U.S. Appl. No. 13/213,689 dated Mar. 18, 2013.
  • Notice of Allowance from U.S. Appl. No. 13/213,689 dated Jul. 23, 2013.
  • Office Action from U.S. Appl. No. 14/061,395 dated Jun. 18, 2015.
  • Response to Office Action from U.S. Appl. No. 14/061,395 dated Sep. 17, 2015.
  • Office Action from U.S. Appl. No. 14/016,906 dated Apr. 8, 2015.
  • Response to Office Action from U.S. Appl. No. 14/016,906 dated Feb. 12, 2016.
  • Office Action from U.S. Appl. No. 14/016,906 dated May 31, 2016.
  • Response to Office Action from U.S. Appl. No. 14/016,906 dated Jul. 28, 2016.
  • Office Action from U.S. Appl. No. 14/016,906 dated Sep. 13, 2016.
  • Office Action from U.S. Appl. No. 14/565,024 dated Apr. 17, 2015.
  • Response to Office Action from U.S. Appl. No. 14/565,024 dated Aug. 17, 2015.
  • Response to Office Action from U.S. Appl. No. 14/565,024 dated Mar. 25, 2016.
  • Advisory Action from U.S. Appl. No. 14/565,024 dated Apr. 14, 2016.
  • Amendment from U.S. Appl. No. 14/565,024 dated Jul. 28, 2016.
  • Supplemental European Search Report from European Application No. 02729222.6 dated Aug. 20, 2009.
  • Response from European Application No. 02729222.6 dated Nov. 17, 2009.
  • Office Action from U.S. Appl. No. 11/137,814 dated Feb. 12, 2009.
  • Response to Office Action from U.S. Appl. No. 14/016,906 dated Dec. 13, 2016.
  • Office Action from U.S. Appl. No. 14/565,024 dated Jul. 5, 2016.
  • Notice of Allowance from U.S. Appl. No. 14/565,024 dated Aug. 30, 2016.
  • Extended Search Report from European Application No. 14841802.3 dated Jan. 30, 2017.
  • English Translation of Office Action from Japanese Patent Application No. 2016-052587 dated Jan. 31, 2017.
  • Office Action from U.S. Appl. No. 14/016,906 dated Mar. 10, 2017.
  • Office Action from U.S. Appl. No. 14/875,028 dated Jun. 1, 2017.
  • Office Action from U.S. Appl. No. 15/425,228 dated Apr. 12, 2017.
Patent History
Patent number: 9730716
Type: Grant
Filed: Nov 7, 2016
Date of Patent: Aug 15, 2017
Patent Publication Number: 20170086866
Assignee: UNITED STATES ENDOSCOPY GROUP, INC. (Mentor, OH)
Inventors: Dean J. Secrest (Concord, OH), Marlin E. Younker (Lantana, FL)
Primary Examiner: Kathleen Holwerda
Application Number: 15/344,915
Classifications
Current U.S. Class: Means For Removing Tonsils, Adenoids Or Polyps (606/110)
International Classification: A61B 17/221 (20060101); A61B 17/00 (20060101);